v1.3 of 480px was submitted to the Windows Phone marketplace early this morning. Among other things, it includes Live Tiles!

If you are viewing any image stream (like Editor’s Choice, or a specific photographer’s photos) you can pin it to your start screen and it will be updated every 30 minutes automatically. You can choose whether you want the most recent photo or just a random photo from the stream to be shown. In the settings page you can turn the background updates on/off and you can set whether you want the images to be random.